oblivious[adjective]Synonyms: unaware, forgetful, heedless, ignorant, insensible, neglectful, negligent, regardless, unconcerned, unconscious, unmindful 
Related Idioms: turned off
Related Words: absorbed, 
unaware, 
unconscious [TahlilGaran] English Synonym Dictionary ▲
 o‧bliv‧i‧ous /əˈblɪviəs/ 
 adjective [not before noun] not knowing about or not noticing something that is happening around you
 Synonym : unawareoblivious of/to He seemed oblivious to the fact that he had hurt her.seemingly/apparently oblivious
 He seemed oblivious to the fact that he had hurt her.seemingly/apparently oblivious Congress was seemingly oblivious to these events.—obliviousness noun [uncountable]
 Congress was seemingly oblivious to these events.—obliviousness noun [uncountable]  [TahlilGaran] Dictionary of Contemporary English ▲